First introduced in the Original Series episode "Balance of Terror," the Romulans became a lengendary villain within Star Trek lore. The conflict between humans and Romulans is also lengendary despite never having been played out on screen. When Enterprise decided to bring Romulans into the show in the second-season episode "Minefield," they faced a huge challenge in keeping with canon. TOS established that humans had never seen Romulans prior to the late 23rd century. How do you tell a compelling story and stay true to that? Even more difficult, how do you establish a Romulan plot directly involving our characters in Season Four without them ever coming face-to-face?

In this episode of Warp Five we're joined by Tommy Kraft, writer and executive producer of the Enterprise-era film Star Trek: Horizon, to discuss Romulans in Star Trek and Romulans on Enterprise, from their first appearance in "Minefield" to the mysterious coda of "Kir'Shara." And, of course, we discuss the deeper plot involving Romulans in "Babel One," "United," and "The Aenar."